Rotary brush



June 1, 1943.

R. O. PETERSON ROTARY BRUSH- Filed Feb. 12, 1941 INVENTOR. RUBEN O.PETERSON.

9s 2 I a 9 4 ATToRNEYs Patented June 1, 1943 '1 I 2,320,384 ROTARY BRUSH Ruben 0. Peterson, South Euclid, Ohio, assignor to The Osborn Manufacturing Company, Cleveland, Ohio, a corporation of Ohio Application February 12, 1941, Serial No. 378,547

13 Claims.

This invention relates as indicated to brushes, and more particularly to rotary brushes of the type in which several sections may be assembled on a mandrel to form a cylindrical brush which is for all substantial purposes unitary.

When it is desired to assemble a plurality of annular rotary brush sections means must generally be provided for mounting such sections on the mandrel and adapting the same to the relatively small diameter of the mandrel. Such mounting means or adapters should be suificiently strong to support the brush sections and at the same time facilitate ventilation of the assembled brush. In my co-pending application Serial No. 335,068, filed May 14, 1940, I have disclosed and claimed an adapter for rotary brush sections which additionally serves to interlock the sections one with the other to form a brush which is unitary to all intents and purposes, although composite in construction.

It is an object of the present invention to provide improved adapter means for rotary brush sections, including means ensuring the firm seating of such sections on the adapter.

It is another object of my invention to provide a rotary brush section which may advantageous- 1y be employed in conjunction with my adapter.

A further object is to provide such sections which when assembled together will ensure ventilation of the brush and avoid uneven action by or streaking of the brush.

Other objects of this invention will appear as the description proceeds.

To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims.

The annexed drawing and the following description set forth in detail certainstructure embodying the invention, such disclosed means constituting, however, but one of various structural forms in which the principle of tion may be used.

In said annexed drawing:

Fig. 1 is a side elevational view of my new brush section mounted on my improved adapter;

Fig. 2 is a fragmentary sectional view taken along the line 2-2 on Fig. 1;

Fig. 3 is a fragmentary sectional view taken along the line 3-3 of Fig. 1;

Fig. 4 is a fragmentary sectional view taken along the line 4-4 of Fig. 1;

Fig. 5 is a side elevational view of my improved adapter and the annular brush back taken from the side opposite to that in Fig. 1;

the inven-' Fig. 6 is an enlarged detailed View illustrating the manner in which a plurality of annular rotary brush sections may be clamped together and interlocked by the adapter;

Fig. '7 is an enlarged fragmentary view illustrating a step in the assembly of a section on an adapter; and

Fig. 8 is a view taken along the line 1-4 of Fig. 1 showing the manner in which two adjacent sections are assembled.

Referring now more particularly to said drawing, the adapter of this invention comprises a disc-like web portion I having a centrally disposed flanged opening 2 whereby it may be mounted on an arbor or mandrel. Extending radially from such web portion is a plurality of arms 3 which are bent to seat the section and then bent radially again to embrace one side of such section. Alternating with such arms are other arms 4 extending from the outer periphery of such web portion and offset or angularly inclined toward the side embraced by said firstnamed arms and then bent back to seat the section, the ends being turned substantially radially to embrace the other side of the section to that embraced by such first-named arms.

The rotary brush section of this invention comprises an annular channelform back 5 in which brush material, such as bristles 6, is retained by means such as wire 1. This invention is not concerned with the particular type of brush material employed or the precise manner in which such material is held in the brush back. The sides of such channelform back are formed into alternate flat depressed areas 8 and raised, somewhat flaring, lands 9. Such lands and depressed areas are so proportioned that when the section is mounted on an adapter the angularly inclined set of arms may embrace the lands while the other set of arms may embrace the depressed areas. Or, when two sections are to be clamped together (see Fig. 8), such last-named arms will engage depressed areas. It will be noted that, as shown in Fig. 6 for'example, the depressed portions of the channel sides are substantially normal to the surface of the inner periphery of the back and the lands 9 are somewhat flaring. Such configuration of the channel sides is most conveniently obtained when the flaring sides may be passed between dies effective to form the above described depressed areas.

When seating a single section on an adapter, the section will first be forced into engagement with the radially extending end portions ID of arms 3 (see Fig. 2) and seated on the axially extending portions ll of arms 4 (see Fig. '7). Such axially extending portions will then be tensioned to laterally swing such arms to more firmly seat the section thereon. The ends l2 of such arms are then turned radially to embrace the lands 9. It will thus be seen that an adapter has been provided which when a section is mounted thereon serves to firmly seat the section and clamp the same between end portions l0 and [2 of arms 3 and 4 respectively. When assembling a plurality of sections to form a composite rotary brush, the sections will be assembled land to land and depressed area to depressed area to provide ventilating openings. It will be noted, as shown in Fig. 8, that the depressed areas of one side ,of a section are staggered relative to such areas of the other side. Thus axially extending portions H of arms 4 may pass through the openings l3 between the arms of adjacent adapters and additionally embrace one or more adjacent sections. In this manner as many sections may be joined as may be necessary to provide a finished brush of the desired size. Inasmuch as lands 9 are slightly flaring (see Figs. 2 and 4), it is obvious that the brushing material at the outer periphery of the brush will not be arranged in parallel layers in the finished brush so as to cause streaking on the work. For further illustration of the manner in which a plurality of sections may thus be joined together, reference may be had to my said co-pending application Serial No. 335,068, and particularly Figs. 2 and 3 therein showing a number of sections in interlocked relationship.

The web portion within the arms may be radially deformed as at l4 and circumferentially deformed as at I5 to strengthen the adapter to resist the strains to which it is subjected. Arms 3 may likewise be strengthened by radial deformations 56, such arm resembling spokes.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the structure herein disclosed, provided the means stated by any of the following claims or the equivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as my invention:

1. An adapter for rotary brush sections and the like comprising a web portion, arms extending from adjacent the perimeter of said web portion adapted to embrace one side of an annular rotary brush section, and other arms adapted to support such section at its inner periphery and embrace the other side thereof, said last-named arms being offset toward the side embraced by said f rst-named arms so that when tensioned they may more firmly seat such section.

2. The method of mounting annular rotary brush sections which comprises seating a section on an adapter having angularly offset arms effective to transversely engage such section at its inner periphery, and tensioning such arms to laterally swing the same and thereby move such offset portions radially outward to more firmly seat such section thereon.

3. A rotary brush comprising an annular rotary brush section and an adapter whereon said brush section is mounted, such adapter having one set of arms embracing one side of said section and another set of arms supporting said section at its inner periphery and embracing the other side thereof, said last-named arm being angularly cifset toward the side embraced by said firstnamed arms and tensioned to more firmly seat said section.

4. A rotary brush comprising a plurality of annular rotary brush sections and adapters, whereon said brush sections are mounted, each of said adapters having one set of arms embracing one side of a section and another set of arms supporting such section at its inner periphery and embracing one or more adjacent sections, said last-named arms being angularly ofiset toward the side embraced by said first-named arms and tensioned to more firmly seat the section.

5. A rotary brush comprising in combination an annular rotary brush section having a channelform back, the sides of such back being formed into alternate depressed areas and lands; and an adapter supporting such section, said adapter having one set of arms engaging the depressed areas on one side of such back and another set of arms supporting said section at its inner periphery and embracing the other side thereof.

6. A rotary brush comprising in combination an annular rotary brush section having a channelform back, the sides of such back being formed into alternate depressed areas and lands; and an adapter supporting such section, said adapter having one set of arms engaging the depressed areas on one side of such back and another set of arms supporting said section at its inner periphery and embracing the other side thereof, one such set of arms being offset toward the side embraced by the other set of arms and tensioned to more firmly seat the section.

7. A rotary brush comprising in combination 'an annular rotary brush section having a channelform back, the sides of such back being formed into alternate fiat depressed areas and flaring lands, such depressed areas on one side being.

staggered relative to such areas of the other side; and an adapter supporting such section comprising a web portion, arms extending from said web portion and engaging the depressed areas of one side of such back, and another set of arms supporting said section at its inner periphery and embracing the other side thereof. said last-named arms being offset toward the side embraced by said first-named arms and tensioned to more firmly seat the section.

8. A rotary brush comprising a plurality of annular rotary brush sections having channelform backs, the sides of such backs being formed into alternate flat depressed areas and flaring lands, such depressed areas on one side being staggered relative to such areas of the other side; and adapters supporting said sections comprising web portions, arms extending from said web portions and engaging the depressed areas on one side of such backs, and other arms extendingfrom said web portions supporting said sections at their inner peripheries and embracing one or more adjacent sections, said last-named arms being offset in the direction taken by said firstnamed arms and tensioned to more firmly seat the section.

9. A rotary brush comprising a plurality of annular rotary brush sections having channelfor-m backs, the sides of such backs being formed into alternate fiat depressed areas and flaring lands, such depressed areas of one side being staggered relative to such areas of the other, contiguous sections being, assembled land to land and depressed area to depressed area to provide ventilating openings; and adapters supporting said sections comprising disc-like web portions, arms extending from said web portions and engaging the depressed areas on one side of such backs, and other arms extending from said web portions supporting said sections at their inner peripheries and embracing one or more adjacent sections, said last-named arms being angularly offset in the direction taken by said firstnamed arms and tensioned to more firmly seat the section and more tightly embrace the adjacent sections.

10. An adapter for annular rotary brush sec tions and the like comprising a disc-like web portion, arms extending from said web portion adapted to embrace one side of a rotary brush section, and other arms extending from said web portion adapted to support such section at its inner periphery and embrace the other side thereof, said last-named arms being angularly offset toward the side embraced by said firstnamed arms so that when tensioned they may more firmly seat the section, said web portion inside said arms being radially deformed to strengthen the same.

11. An adapter for annular rotary brush sections and the like comprising a web portion, arms extending from adjacent the perimeter of said web portion adapted to embrace one side of an annular rotary brush section, and other arms extending from said web portion adapted to support such annular section at its inner periphery, said last-named arms being offset toward the side embraced by said first-named arms to provide a resilient seat for such section.

12. A rotary brush section comprising an an nular channelform brush back, and brush material retained therein, the sides of such channelform back being formed into alternate flat depressed areas and intermediate lands, such depressed areas on one side being staggered relative to such areas on the other side and such areas extending radially the entire width of the sides.

13. A rotary brush comprising a plurality of annular rotary brush sections having channelform backs, the sides of such backs beingformed into alternate fiat depressed areas and intermedi ate lands, such depressed areas of one side being staggered relative to such areas of the other and such areas extending radially the entire width of the sides, contiguous sections being assembled land to land and depressed area to depressed area to provide ventilating openings; and a central support for said sections.

RUBEN O. PETERSON. 

